PJ40869: GLOBLC FUNC=CLOSE,OPT=UPDATEWT

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APAR status

Closed as program error.

Error description

See Problem Summary.

Local fix

na

Problem summary

APAR NUMBER: PJ40869
PRODUCT: z/TPF
FUNCTIONAL AREA: FORMAT-2 GLOBALS
SHIPPED IN PUT: 10
ABSTRACT:
Ensure Close of Format-2 Global after Sync Timeout
PACKAGE CONTENTS:
Source Segments:
(C) base/macro/ierrn.mac
(C) base/rt/cglapi.cpp
Object Only Binaries:
None.
Configuration Independent Binaries:
None.
Support Files:
None.
OTHER BINARIES TO BUILD: YES
(C) <sys>/obj/cglapi.o
(C) <sys>/stdlib/libCTAD.so
(C) <sys>/stdload/CTAD.so
COMMENTS:
The customer experienced a problem while closing a synchronized
format-2 global using the update/wait option (OPT=UPDATEWT).
One of the active processors in the z/TPF complex was not
available at the time due to a system IPL. As a result, a Sync
Timeout situation was detected and reported via a SNAP error.
However, contrary to documentation, the global was not closed
for the requesting ECB. When the same ECB later attempted to
re-open the global, a SNAP error was issued indicating that the
ECB already had the global opened.
The customer also reported that the value for the Sync Timeout
error (ETPFGLOB_TIMEOUT) was not defined in the macro
ierrn.mac. It was defined in the C header file errno.h.

Problem conclusion

SOLUTION:
Updated macro segment ierrn.mac to add the value for
ETPFGLOB_TIMEOUT. Also updated segment cglapi.cpp at the
routine labeled * Return the global descriptor to the available
list * to add the additional condition in the if statement of
|| (errno == ETPFGLOB_TIMEOUT) to ensure the global is marked
as closed for this ECB after a timeout condition.
COREQS: NO
None.
MIGRATION CONSIDERATIONS: NO
None.
BUILD COMMANDS AND INSTRUCTIONS: YES
#maketpf commands for linux
maketpf -f CTAD cglapi.o
maketpf CTAD link TPF_VERIFY_LINK_REFS=NO
maketpf CTAD link
UPDATED INFORMATION UNITS: NO
None.
See your IBM representative if you need additional information.
DOWNLOAD INSTRUCTIONS:
http://www.ibm.com/software/htp/tpf/maint/maintztpf.html
APAR URL:
http://www.ibm.com/software/htp/tpf/ztpfmaint/put10/PJ40869.htm